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Fast and precise, flat and wide

Collimated coaxial illumination

When rays of light in a beam are parallel, the light is collimated. Using
light from a collimated light source is especially useful for detecting
shallow flaws and dents on flat, reflective objects.

Here the light from a point light source passing through a lens that creates a
parallel light beam. Wherever the surface is perfectly flat, the light is
reflected back through the lens, these areas appear bright in the image. Any
surface features such as depressions or bumps reflect the light out of the
field of view of the lens, and appear as dark areas on the image.

This short tutorial gives you insights into methods of illumination for machine vision in order to improve your inspection results. If you want to learn more about illumination, visit one of our on-site illumination trainings.